package com.springBoot.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class MyInterceptor implements HandlerInterceptor{

	 @Override
	    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
	        boolean flag =true;
	        String user=(String)request.getSession().getAttribute("userName");
	        if(StringUtils.isEmpty(user)){
	            response.sendRedirect("toLogin");
	            flag = false;
	        }else{
	            flag = true;
	        }
	        return flag;
	    }

	    @Override
	    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
	    }

	    @Override
	    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
	    }
}
